Oxyhydrogen cutting-torch



c. LCGBERLY. OXYHYBRUGEN CUTTING TORCH.

APPLICATIBH HLfD APR. l. T919.

Patented May 18, 1920.

TTTTTTTTTT UNITED STATESv PATENT OFFICE.

`CLARENCE J'. .COBEBLY, 0F LOS ANGELES, CALIFORNIA, ASSIGNOB TO CALIFORNIA BUBDETT OXYGEN COMPANY, A CORPORATION OF CALIFORNIA.

OXYHYDROGEN CUTTING-TORCH.

Specification of Letters Patent.

Patented May 18, 1920.

To all whom it may concern Be it known that I, CLARENCE J. CoBnRLY, a citizen of the United States, residing at Los Angeles, in the county of Los Angeles and State of California, have invented a new and useful Oxyhydrogen Cutting- Torch, of which the following is a specification. l

My invention relates to Oxy-acetylene cutting torches, and the objectsof the invention are to provide a novel form of mixer and a novel form of control valve for use in such torches.

Referring to the drawings, which are for illustrative purposes only,

Figure 1 is a sectional elevation through a torch embodyin my invention.

Fig. 2 is an en arged section through the mixer, and r Fig. 3 is an enlarged section through the valve.

In the form of torch shown, a head 11 is provided in which a tip 12 is seated by means of a retaining nut 13. Threaded in the head 11 is a primary oxygen pipe 15 and a mixed gas pipe 16. T e mixed gas pipe 16 has a small opening 17 therethrough and a flange 18 formed `on the end thereof.

Seated ina recess 19 inside the end 18 is an explosion 'plug 20, this plug having a head 21 of approximately the same diameter as A.

the flange 18 and fitting inside the recess 19 in such a manner as to leave a free annular explosion space therearound. Y

Abutting against the rear of the explosion plug 20 is a mixing plug 22, this plu having a conical seat 23` at the rear en thereof, the parts 18, 21 and 22 being forced together and the member 22 being forced against its seat 23 by means of a compression nut 25. The compression nut 25 is threaded on a body 26 having a conical seat coperating with the seat 23 and having an external thread 27 on which the nut 25 is threaded. v

Formed in the mixing plug 22 and in the body 26 are cavities which coperate to form an annular space 30 which surrounds the mixing plug 22 and which communicates through small openings 31 with a centralo ening 32 formed in the mixing plug 22. he explosion plug-20 has a small central opening 33, the openings 32, 33 and 17 forming a continuous passage which communicates with an opening 35 formed` in the head 25 which is in open communication with a secondary ox''gen pipe 37 which is threaded therein. he .annular space 30 communicates through an opening 40 with a hydrogen pipe 41. The hydrogen pipe 41 passes to the rear of the torch, being secured in an end casting 42 which is provided With a nipple 43 having a hydrogen shut-off valve 44 carried therein. A fiexible hydro en supply. pipe (not shown) is attache to the outer end of the nipple 43 in accordance with standard practice in the art. Formed on the casting 42 is a vthreaded extension 45 to which a flexible oxygen supply pipe (not shown) is attached in accordance with standard practice in the art. An opening 46 through the extension 45 is in open communication with a tertiary oxygen pi e 47 which connects into a valve body 48. he secondary oxygen pipe v37 connects into a shut-ofi' valve body 50 Awhich is provided with a shutoff valve 51, the shut-off valve body 50 being connected through a nipple 52 with the valve body 48. The valve body 48 is provided with a central opening 49 in which a valve stem 53 is free to slide, this valve stem being surrounded by a stufling box gland which is used to compress packing 54 about the stem 53 and to render it gas tight. The stem 53 is` turned down as shown at 55 so that an annular opening is formed therearound inside the opening 49.

The primary oxygen pipe 15 communicates with this annularopening through a channel 56. A valve 57 havin a conical end 58 is rovided, this'valve siding in a cap 59 an being forced upwardly in the petition shown in Fi pression s ring 60.

3 by means of a comhe cap 59 is threadedl 'in the bo y 48 and an annular opening-61 ed plug 67, is used to 01u-.rate the valve stem 52.

The method of operation of my invention is as follows:

Oxygen being supplied to the opening 1G and hydrogen being supplied to the interior oi the nipple Llll through llexillle pipes in accordance with standard practice, the supply ol these gases can be controlled as jfollows:

The hydrogen supply can be sluit ofi at all times by means of the valve 4l and the oxygen supply through the pipe 3l' can be shut off at all times by means of the valve 51. The oxygen supply to the pipe l5 is normally shut ofin at all times by means oi the valve 57. The tip 12 is provided with a central passage Tl) through which oxygen is supplied for cutting purposes, and with a. plurality of exterior openingsll through which mixed gas is supplied for heating purposes. The valve 57 is controlled by means oi' the grip (55 for the purpose oi regulating the amount of oxygen supplied for cutting purposes, no oxygen being supplied until the lever G5 is pressed down.

\Vith the parts inthe position shown in Fig. 3, the valve 57 is forced upwardly by the spring 60, being seated on the lower edge of the opening 51, thus shuttin off all communication between the annu ar space 61 and the annular space 51. This prevents oxygen from flowing into the pipe 15, the heating flame alone being used. The hydrogen for the heating 'lame is supplied through the pipe 41 and the oxygen is supplied through the pipe 37. The oxygen from the pipe 37 passes through the opening 35, the

,openings 32 and 33, into the opening 17 and from thence into the openings 71 in the tip 12. The hydrogen is supplied through the pipe 41 to the annular space 30 around the mixing plug 22. The hydrogen under pressure is then passed through the small open ings 31 into the stream of movin oxygen passing through the opening 32. gWhen it is desired to use the cutting fiamethehan dle 65 is depressed thus opening the valve 57.

The particular advantages of the various forms of construction are more or less obvious. I Would call attention, however', to the arrangement of the parts 18 to 26 inclusive, best illustrated in Fig. 2. It might be explained that the explosion plug 20 does not t tightly in the cavity 19, a small an nular opening being left between the exterior of the plugr 20 and the interior wallsof the pipe 16 which form the cavity 19, An enlarged explosion space 80 is formed in the lith the parts so turned the mixing plug 22 can be readily removed from its seat and the explosion plug 2() can also be readily removed either for replacement, repair` or for cleaning. These parts can also be read ily replaced and secured by the single nut 25.

Thrl principal novelty in the valve shown in Fig 5l lies in the construction of the stem 52 and thc valve 57 which are made in a` separate piece so arranged 'thatthc valve seats itselfl without binding and Without re gard to the direction of the stem 52.

Vhat l claim is:-d

1. A mixer for an Oxy-hydrogen torch comprisingr a body having a seat therein7 a mixing plug coperating'- with said seat, said body and plug having mutually cooperating openings by which a gas may be delivered to a central mixing opening therein, an explosion plug having a central open ing coperating with said central mixing opening, a pipe into which said explosion plug projects, a head formed on said pipe` a flange formed on said explosion plug of approximately the same outside diameter as said head, and means for simultaneously forcing said head against said Harige and making a gas tight seal between said pipe and said body.

2. A mixer for an oxyhydrogen torch comprising a body having a seat therein. a mixing plug coperating with said seat, said body and plug having mutually coperat-v ing openings which a gas may be delivered to a central mixing opening therein, an explosion plug having afeentral opening cooperating With said central mixing opening, a pipe into which said explosion plug projects, a head formed on said pipe, a flange formed on said explosion plug of approxi-v mately the same outside diameter as said head. and ai compression nut `threaded.on said body and engaging said head.

In testimony whereof I have hereunto set my hand at Los Angeles, California, this 26th day of March. 1919.

CLARENCE J. COBERLY. 

